vanessarobles vanessarobles
  • 25-09-2018
  • Geography
contestada

what are the main causes of pollution in the united states and canada?

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justing63 justing63
  • 25-09-2018
It's caused mainly by industrial sources that have been blown in from the mid-western United States. In fact, during the summer months in Windsor (Ontario), around 70% of this smog is directly related to industrial sources coming in from over the United States border.
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